Oil filters using water-based latex binders

Details Oil filters using water-based latex binders Oil filters using water-based latex binders

B - Operations, Transporting

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B01D 39/14 (2006.01) B01D 39/16 (2006.01) D21H 17/34 (2006.01) D21H 17/37 (2006.01) D21H 17/39 (2006.01) D21H 17/43 (2006.01)

Patent

CA 1279795

ABSTRACT OF THE DISCLOSURE This invention relates to impregnated oil filter substrate and to oil filters containing such impregnated substrates that require a single cure and can pass a hot oil immersion test, said filter substrate being impregnated with a water-based binder comprising a latex containing at least 20% polymerized vinyl chloride in the latex solids, said latex being a copolymer of vinyl chloride, 30 to 60% lower alkyl acrylate, and one or more comonomers selected from acrylic acid and N-methylol acrylamide, said comonomers being used in an amount of up to 5%, based on the weight of the monomers used to make the latex; said binder also containing 5 to 20 parts of a cross-linking resin per 100 weight parts of latex solids and 5 to 20% catalyst for the cross-linking resin based on the weight of the cross-linking resin.

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